Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f2a7e45de95126b…

MALICIOUS

PDF

45.6 KB Created: 2020-08-30 22:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9fdf2576136005efb5fa0af64165c18 SHA-1: 496a76edcfebb7be19c7fd70ecdc8d85808fe951 SHA-256: 6f2a7e45de95126b1631394a2e2e141a3ad1fc039904349e55ebec5524773045
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a link farm designed for SEO manipulation, and at least one link directs to a known malicious redirector. The presence of a 'download' button heuristic further suggests a deceptive download lure. While no scripts were extracted, the PDF structure and embedded links strongly indicate an attempt to redirect users to malicious content, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wix?keyword=path+of+war+expanded+pdf+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7235/6514/files/terratek_miter_saw.pdf
    • https://cdn.shopify.com/s/files/1/0463/7858/2171/files/ares_wizard_zip_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/submit_form_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/vorizemezifari.pdf
    • https://cdn.shopify.com/s/files/1/0435/0060/1504/files/appendix_anatomy_and_physiology.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_bd4a8beb8ce7455aafe348a17a1310f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_295d1b478cd3491e9d6f63357d716718.pdf
    • https://static.usrfiles.com/ugd/58a813_30bb7fe77c5a44f98ecc62229a6c4fbd.pdf
    • https://static.usrfiles.com/ugd/b8c837_3747a899bcf04340a272ee1d411db89a.pdf
    • https://static.usrfiles.com/ugd/fef806_781746aa20b94bcfaa74385727aa739e.pdf
    • https://static.usrfiles.com/ugd/b8c837_97e2640bd1cb497eaffce27b09671eb0.pdf
    • https://static.usrfiles.com/ugd/b8c837_36350c2d29ef4ed4b7ae912bc8d282b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1068a86272d44ee79c5c33a8e5e7a9ab.pdf
    • https://static.usrfiles.com/ugd/238140_5f1cb53ea96b4a95b227f6d76a785b8c.pdf
    • https://static.usrfiles.com/ugd/1ee69b_7821a0b73a844decbc08d9e061432852.pdf
    • https://static.usrfiles.com/ugd/b8c837_8012811e613d4442b9bae7f5fa8b8c84.pdf
    • https://static.usrfiles.com/ugd/b8c837_51a779df1f9348c3967d9a86dfea61fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3893e123da54d9893a167f3cf863578.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b95.bin
c0da24f664ca430484dc413ae849480f3b4c0932cbf83e27ee339e1b4b2d45a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B95 5112 bytes
font_01_sfnt_off00007d06.bin
62612f6fc5755de685c59eb8eefa9a7a972bbff9e776c0bcfde2c0e595d295e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D06 13800 bytes

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